On Mon, Aug 05, 2019 at 06:23:42AM -0400, lylejfrank...@gmail.com wrote: > From: Lyle Franklin <lylejfrank...@gmail.com> > > - ProxyDHCP allows a second DHCP server to exist alongside your main > DHCP server and supply additional BOOTP related options > - When u-boot sends out a DHCP request, the real DHCP server will > respond with a normal response containing the new client IP address > while simultaneously the ProxyDHCP server will respond with a blank > client IP address and a `bootfile` option > - This patch adds CONFIG_SERVERIP_FROM_PROXYDHCP (default false) to > enable this behavior and CONFIG_SERVERIP_FROM_PROXYDHCP_DELAY_MS > (default 100) which tells u-boot to wait additional time after > receiving the main DHCP response to give the ProxyDHCP response time > to arrive > - The PXE spec for ProxyDHCP is more complicated than the solution > added here as diagramed on page 16: > http://www.pix.net/software/pxeboot/archive/pxespec.pdf: > > ``` > DHCP Discover will be retried four times. The four timeouts are 4, 8, 16 > and 32 seconds respectively. If a DHCPOFFER is received without an Option > timeouts in an attempt to receive a PXE response. > ``` > > - Adding a simple delay worked for my purposes but let me know if a > more robust solution is required > > Signed-off-by: Lyle Franklin <lylejfrank...@gmail.com>
Sorry for the delay, applied to u-boot/next, thanks! -- Tom
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